Furnace.



No. 695,750. Patented Mar. l8, I902.

A. J. F. MILLER.

FURNACE (Application filed June 27, 1901.)

No Model.)

UNITED STATES AT EN T jg 6;

AUGUST 3. F. MILLER, OF CENTRALIA, ILLINC ES, A9818 TO CHARLES l. MARSHALL, OF ENlRALiA, ll.

FU RNACE.

SPECIFICATION forming part of Letters Patent No. 695,750, dated March 18, 1902.

Application filed June 27, 1901. Serial No. 66,297. \No model.)

To all whom it may concern:

Be it known that I, AUGUST J. 1 MILLER, a citizen of the United States, residing at (lentralia, in the county of Marion and State of Illinois, have invented certain new and useful Improvements in Furnaces; and I do declare the following to he a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to furnaces.

The'ohject of the invention to provide a furnace with a grated lining at its rear and side walls to prevent the formation of clinic, ers on the wall and the consequent injury of the wall in the act of removing the same and at the same time to assist in promoting combustion, thus more thoroughly consuming the fuel,.and which will also enable the furnace to be more readily cleaned than the constructions heretofore extant. With this and other objects in view the iuvention consists of certain novel features of construction, combination, and arrangement of parts which will be hereinafter more fully described, and particularly pointed out in the appended claim.

In the accompanying drawings, Figure l is a front View of a furnace, illustrating my in ven'tion. Fig. 2 is a longitudinal vertical sectional view. Fig. 3 is a horizontal sectional view. Fig. at is a perspective view of one of the side linings, and Fig. 5 is a view of the end lining.

In the drawings, 1 and 2 denote the side walls, and 3 the rear en,d wall, of the furnace. The side walls-and the en d wall are each provided with a horizontally-disposed chamber having a horizontal top wall 5 and an inclined base-wall 6, providedwith supporting-lugs 7, spaced apart.

8 denotes the side; linings, each o which consists of a metallic strip or plate having a vertical side 9 and horizontal top 10, the upper surfaces of which are formed with spaclug-blocks 11, which engage the brick, form: ing the top wall of the chamber 4 and forin 10 and the top wall 5 of the chamber. The lower edge of the vertical portion Sof the plate seats upon the lugs 7, and in order to obtain an additional support at this point, and thus effectually prevent the tilting of the plate, I provide the inner sides of the section 3) with vertical webs 15, which rest upon said lugs 7. The vertical portions of these plates are each provided with a horizontal row of airinlct slots or apertures 15, so that air pass ing up under the grate between the lugs and into the chamber i will some pass out through said slots or openings, while the remaining portion will ascend and pass out between the horizontal portion of the plate and the top wall of the chamber.

17 denotes the forward bridge, preferably made of angle-iron and secured to the sides of the furnace at its lower end, and 18 denotes the lower bridge, which is formed integral with the rear end lining. Upon these bridges is adapted to he supported in the usual manner the grate.

From the foregoing description, taken in connection with the accompanying drawings, the'construction, mode of operation, and advantages of the invention will be readily understood without requiring a more extended explanation.

Various changes in. the form, proportion, and details of construction may he made with-- in the scope of the invention without departing from the spirit or sacrificing any of the advantages thereof.

Having thus described my invention, what I claim, and desire to secure by Letters Patout, is-- The combination, in a furnace, of a furnace-wall havingaiongitudinal chamber having an inclined base-wall, lugs or supports projecting from said inclined hase wall, and

the vertical side of which is perforated and is provided on its outer face with webs to engage said lugs or supports and provided at .its upper edge with an outwardly-projecting range or ledge having blocksupon its upper air-passages between said horizontal portion 1 surface to engage the top Wall of the chama gratedining consisting of a strip of metal "imon fwhereof I have hereunto Se:

ber anc'tform aspace between said ouflwardl. Z i"- in presence of twa subacfibing witprojecting flange and top wall where-by tin; air passing into sai chamber from below, partly a was ihrough the slots or apeartm-as in said hm L'arb'ugh the space'betwe' the fiQ-J Q- fining and the hop wail w 3 the chambw, anuamniialiy as setfc riia. 

